1. a dictionary of slang.......rarely
2. a place for ironic, self-deprecating definitions such as this one
3. a place to bitch about "losers at school", rave about that girl/guy you fucked last night, diss other races or subcultures, etcetera
4. a place where people like myself bitch about the website yet use it all the time
5. a place where people who know what terms mean go to laugh at what other people think it means

A website which allows insecure and uninformed teenagers to spout what they erroneously believe is wit, wisdom, or knowledge.

A common occurrence is for fans of a band to beg the reader to be "open minded" about this band, which they "discovered" on mtv. Nevertheless, these entries provide worthwhile amusement at the expense of whining teenagers.

the only real dictionary, as words are technichaly defined by common usage (and spelling). Also an outlit for rascism and a reason to use sexual references.
Oddly enough, undefined to a degree, because no-one seems to know wether to only define urban slang, or to "define your world" as it suggests.

G:Dude, what the hell? this definition defines itself such that its obviously not urban slang.
B: don't make me burninate you with this flamethrower.

..I say potentially because it's mired by fucktards who seem to think it's really funny to put their friends' names up here, and people who just have to type something, but can't be bothered to type an accurate or meaninful definition.

D00d, you'll never believe what I did to Joey JoJo Junior Shabadoo! I called him a dick on Urban Dictionary! Buuuuuuurrrrrrrrrrnnnn!

An ingenious marketing ploy whereby the creators of the dictionary get written definitions from various authors via the web (which then becomes the intellectual property of the creators) who then bind them into a book entitled "Urban Dictionary" and hawk it to various publishing houses until one of them agrees to publish it and make them rich - while the various authors who contributed to the book remain poor.

A user-updated online dictionary that is often mistaken for a messageboard by some of the more simple-minded denizens of the Internet!

"Hmm, I think after I get done whacking off to crudely-drawn furry "vore" drawings, I'll go rebut the definitions of "Slipknot" with a definition of my own that doesn't actually define the word for anyone who doesn't know it already, but that'll totally put those h8-3rs in their place! I'm cool because I use numbers instead of letters sometime."